Intensive multifunctional fully variable valve actuation system for 6-cylinder internal combustion engine

Abstract

An intensive multifunctional fully variable valve actuation system for a 6-cylinder internal combustion engine belongs to the field of valve actuation systems of internal combustion engines and comprises oil feeders, a cycle selector, a mode converter, two-position three-way valves, a two-position two-way valve, an valve actuator and the like. The designed cycle selector only needs the two oil feeders and the two two-position three-way valves to achieve a variable valve event required by an actuating mode and a braking mode of the internal combustion mode, so that powerful functions are achieved through extremely low costs; the closing process of the valve is not restricted by the operation phase of the oil feeders, a valve advanced closing event required by idling and middle-low loads of the internal combustion engine is met, and fuel consumption and emission of the internal combustion engine in practical application can be reduced sufficiently; the intensive multifunctional fully variable valve actuation system for the 4-cylinder internal combustion engine can be applied to a naturally aspirated and turbocharged internal combustion engines only by exchanging objects communicated onto the three oil openings of the mode converter, the type adaptability is good, and the application range is wide; the arrangement of the system on a practical vehicle type can be facilitated due to the fact that components of the system are connected through oil tubes.

Description

technical field [0001] The invention relates to an intensive multi-functional continuously variable valve driving system for a 6-cylinder internal combustion engine, which belongs to the variable valve driving system of the internal combustion engine. Background technique [0002] With the development of the world economy, energy and environment issues have become important issues affecting sustainable economic development. As the most widely used power machinery in the world, the internal combustion engine consumes a large amount of fuel every year and emits a large amount of harmful gases and particles. The work of energy saving and emission reduction of internal combustion engines is urgent. In addition, with the sharp increase in the number of internal combustion engines, the annual loss of people's lives and property caused by traffic accidents is increasing year by year. People pay more and more attention to vehicle safety, and more and more countries list auxiliary br...

AI Technical Summary

Problems solved by technology

However, the system still has the following two problems to be solved: 1) Since the two-position five-way valve used in the system needs to switch under the condition of different pressure differences of each oil port, the pressure difference change of each oil port is extremely complicated , and, as the speed increases, the response time of the two-position five-way valve is required to be shorter and the flow rate is greater. These requirements have resulted in a complex structure of the two-position five-way valve and high processing costs; 2) In the driving mode of the internal combustion engine, The system cannot realize the variable valve event of closing the valve early in the fuel supply phase, which will limit the performance improvement of the system at idling speed and low-to-medium operating conditions of the internal combustion engine, which are exactly the common operating conditions of urban vehicles. The operation of the internal combustion engine largely determines the fuel consumption and emissions of the vehicle during actual operation

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